Sectional pipe and clamp connection therefor.



S. FIKING. ,SECTIONAL PIPE AND CLAMP CONNECTION THEREFOR. APPLICATIONFILED NOV. 1. 1914. RENEWED MAY 11, me.

1,208,708. Patented De0.12,1916.

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Samuel P King 3. place when the bed a detail view The means ent ce and 2t gether is a cerapi ete TTNTTED STATES T QFFTQF...

SAMUEL F. KING, OF BIRMINGHAM, ALABAMA, ASSIGNOR T0 ROBERT 0. WHITE.

SECTIONAL PIPE AND CLAMP CONNECTION THEREFOR.

Specification of Letterslatent.

Patented Dec. 12, 1916.

Application filed November 7, 1914, Serial No. 870,825. Renewed May 11,1916. Serial No. 96,945.

To all whom it may concern:

Be it known that I, SAMUEL F. KING, a citizen of the United States ofAmerica, residingat Birmingham, in the county of Jefferson and State ofAlabama, have i11- vented certain new and useful Improvements inSectional Pipes and Clamp Connections Therefor, of which the followingis a specification.

My invention relates to culvert pipe and like pipe which is formed inlongitudinal sections which are connected together so as to hold themagainst relative displacement. In the case of culvert pipe, to which myinvention more particularly applies, it is desirable to so interlock thesections that they will be held against transverse-or endwise horizontaldisplacement and also against vertical displacement which usually takesunder the pipe subsldes or becomes undermined so that the lower halfsection tends to drop away from the upper section.

The object of my invention is to interlock the pipe sections in theseveral respects mentioned above by an extremely simple and economicallocking means which is positive in its action and which accomplishes itsends without appreciably increasing the weight or cost of the pipe.

iVith these objects in view, my invention consists in the novelconstruction and ar rangement of parts hereinafter more particularlydescribed and illustrated in its preferred bodiment only, referencebeing had to the in Figure 1 is a side View of culvert pipe showing theclamp engaging only one pair of shoulders. Fig. 2 is a verticalsectional view on the line 2-2 of Fig. 1. Fig. 3 is a sectional view onthe line 33 of Fig. 1 with the pipe sections separated. Fig. 4 is of theclamp.

Similar reference numerals refer to similar parts throughout thedrawings.

I have shown my invention applied to a culvert pipe which forms thesubject matter of a separate application and is not, therefore,specially claimed herein. The pipe is formed by two duplicate halfsections 1 and 2, each having ahub end 3, a spigot end 4, and suitablemeans for interlocking the hub and spigot ends of the assembled pipeunits. I employ for interlocking the accompanying drawings, wherepipeunit, consists in providing each section on each side with a pair oflugs which, as shown, are all similar but which, for the sake of moreclearly explaining their relative arrangement, are given differentreference numerals, the lugs on the left hand side of the upper section2 (Figs. 2 and 3) being indicated by the numeral 5 and the lugs on theright hand side by the numeral 6, the lugs on the lower section 1 on theleft are numbered 7 and on the right 8. It will be noted in Fig. 1 thatthe pair of lugs 5 on the upper section are spaced so as to be receivedand fit snugly between the pair of lugs 7 on the lower section. In likemanner the lugs 8 on the other side of the lower pipe section 1 areadapted to be received and fit snugly between the lug 6 on the uppersection, it being noted that the several lugs project substantiallybeyond the side edges of their respective pipe section so as to overlapthe opposite pipe section and its lugs. Moreover, it will be noticedthat each lug is of substantial width and thickness slightly forconvenience in molding and are beveled slightly toward their top andbottom ends. I provide a clamp sleeve 9 having top and bottomoverhanging jaws 10, the inner faces of which are set at a slight angleto form a wedging clamp socket.

In practice, after two pipe sections have been assembled as shown inFig. 1, to interlock them it is only necessary to take a clamp sleeve 9,insert its larger end in a horizontal direction over each lapped pair oflugs 5 and 7, or 6 and 8, and then drive the clamp longitudinally of thepipe until it tightly clamps the top and bottom edges of its respectivepair of lugs, which top and bottom edges will stand in horizontalalinement. lVhen it is noted that the manner in which the lugsthemselves will serve to pre vent any relative displacement horizontallyof the pipe sections, it will be obvious that the use of the clampsmanner described, the top and bottom edges of each pair of abuttinglugs, will effectively in engaging in the hold the pipe sections againstvertical displacement and by this means I avoid any necessity forbolting the sections together and I obtain a very strong and permanentfastening, all connecting parts of which can be simply and cheaply cast.

The arrangement of the two pairs of'lugs at each side of a pipe unit ispreferred, but the advantages of the locking means would be obtainableif a less number of lugs were used, the gist of the invention consistingin the manner in which the lugs are shaped to form a pair adapted toreceive the clamp sleeve when inserted over them transversely to theirline of abutment.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent, is: r

1. A sectional pipe divided into longitudinal sections and means to tiesaid sections together against both axial, lateral, and verticaldisplacement, said means comprising pairs of lugs, one lllg' of eachpair being on a different pipe section, the lugs of each pair beingraised from the side of their respective pipe sections and extendedbeyond the section edge to overlap the side of the adjacent section,each lug having top and bottom edges that are spaced substantiallyequidistantly from the line on which its respective pipe section meetsthe adjacent section, the lugs of a pair being disposed to abut edgewiseto prevent axial displacement of the pipe sections, the top and bottomedges respectively of a pair of,lugs being undercut and disposed incommon planes, and a clamp sleeve adapted to engage the undercut top andbottom edges of each pair of abutting lugs to prevent relativedisplacement of the pipe sections.

2. A p1pe formed of cast half sections, and lugs cast on each sectionand overhangof a raised shoulder onthe side of the pipe sections, eachabutting pair of lugs and their shoulders forming in side elevation awedge like sectional body raised from the side of the pipe and havingits converging top and bottom edges undercut and equi-distant from thejunction plane of the pipe sections, and an undercut wedge clamp sleeveadapted to be driven into engagement with said undercut edges of thelugs and shoulders, substantially as described.

3. A pipe section having along its side edges, lugs which project beyondthe edges and into position to overlap the sides of the adjacent pipesection, each lug having its body continued as an integral raisedshoulder on the side of the section, the end edges of the shoulder andof the lugbeing on opposite sides of the pipe section edge andequi-distant therefrom, and said shoulder and lug edges being reverselyundercut 4. As an article of manufacture, a pipe section having alongeach side edge'one or more offset side lugs,which lugs rise from thesurface of the pipe at ,a point spaced from its edge and extend asubstantial distance beyond said edge, the top and bottom edges of saidlug being undercut and equally spaced from the section edge,substantially asdescribed.

In testimony whereof I affix my signature in presence of two Witnesses.

SAMUEL F. KING.

Witnesses: 7

NoMiE \VnLsrI, 'R. D. JoHNsToN, Jr.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

